Cable or wire clamp



Ill)

Patented Mar. 22?., 1927.,

JEI-IU FREDERIC HAWORTH, 0F EDGEWORTII, PENNSYLVAN.

canins` on WIRE CLAMP,

Application filed November The present invention relates to cable clamps and more particularly to cable or Wire clamps of the type wherein the cable or Wire isheld in a. clamp housing` by means of a wedge. ln this type ot cable clamp thegripping engagement of the wedge on the cable or wire is usually secured by the tension of the cable or wire tending to draw the vwedge into a tapered socket in the housing. An e'ainple 'of acllainp of this general type is Shown in my Patent No. 1,380.80@ of June 7, 1921. The linal seating oi the wedge in this type of clamp vis usually accomplished by the heavy tension applied to the cable or wire, which result-s in a slight seating or sliding movement of the wedge in the housing, which in turn results in a slight movement being give-n to the tensioned cable or wire which may result inthe for mation of a certain amount. of slack. The object of the present invention is to eliminate so far as possible the seating moveinent of the wedge in the housing and to permit the iinal gripping pressure to be apw plied without the necessity of drawing the cable or wire under tension. This is pret? erably accomplished by means ot a second wedge which is forcibly driven into the clamp housing to cooperate with the first wedge in applying the gripping pressure to the cable or wire.

In the drawings:

Fig. 1 is a longitudinal central section through a cable clamp embodying my invention, showing a. cable held therein;

Fig. 2 is a side elevation of the clamp; and

Fig. is a cross-section taken ou the line III-HI of Fig. 1.

For simplicity, the invention will be described with particular reference to a cable clamp of the usual type, in which the end of the cable embraces a. single wedge held in a tapered housing. While a cable of the Wire rope type, which is made up of a plurality of separate wires, is illustrated as being held in the clamp, it will be obvious that a cable composed of a single wire or a cable ot' material other than metal might be held.

The cable clamp comprises a housing l within which is disposed a wedge 2 which is embraced by a loop 3 of the cable 1. The housing has ay tapered socket formed by the converging sides 5 and 6. The sides o and 6 are interiorly curved or channeled to lit the cable and wedges as shown in Fig. 3. The wedge 2 has similarly recessed sides 7 1, i926. serial No. 145,673.

line of the tensioned leg 4 so that there is bending f a direct pull on the cable without its tensioned part.

A second Wedge 10 is arranged to be torcia i bly driven into the housing to grip the free or unt'ensio'nedYleg` lll oi' the loop andV to force the wedge 2 over into tight gripping engagement with the tensioned leg 1a. The

Wedge 1U llasan inwardly recessed side l2 COIlflHllhg to the cable and an outwardly curved side 13 fitting against the side wall 6 el the housing.

lfihen the clamp is to be applied, the cabl is looped around the wedge 2 which is positioned in the housing. Then the wedge 10 is forcibly driven into the open larger end or the tapered socket with sulicient torce to apply the desired grip to the cable. Both Wedges 2 and 10 are tapered in the same direction as the taper of the socket` so that tension on the cable will tend to draw the wedges into even iirmer gripping engagement with the cable. The wedge 2, with its embracing cable loop, may be given its linal position in the housing and all slack taken out of the cable, and then the wedge 10 may. be forcibly driven in to apply clamping pressure to the cable. After this is done there is little, if any, seating movement ot the, wedge 2 and cable in the clamp when the cable is afterward put under tension.

lVhile the preferred embodiment of the invention has been speciiically illustrated and described, it is understood that the invention is not limited to its illustrated embodiment, but may be otherwise embodied within the scope ot the following claims.

I claim:

1. A. cable or wire clamp comprising a housing having ay tapered socket for receiving a loop of cable or wire, va Wedge in the socket and within the loop of the cable or Wire for frictionally clamping the tensioned leg of the loop against one side of the socket, and a second wedge adapted to be forced into the socket into gripping engagement with the other leg oit' the loop.

Q. A cable or wire clamp comprising a housing having a tapered socket for receiving a loop of the cable or wire, a Wedge in llt the socket tapered in the same direction as the socket and Within the loop of the cable or Wire for frictionally clamping the tensioned leg of the loop against one side of the socket, and a second wedge tapered in the same direction as the first Wedge and adapted to be forced into the larger end of the socket and into gripping engagement with the other leg of the loop.

3. A cable or Wire clamp comprising a housing having a tape-red socketfor receiving a loop of. the cable or Wire, a Wedge inthe socket for frictionally clamping the tensioned leg of the loop against one side of the socket, and a second Wedge adapted to be forced into the socket into gripping engagement With the other leg of the loop.

4. A cable or Wire clamp comprising a housing having a tapered socket for receiving a loop of the cable or Wire, a Wedge in the socket and adapted to be embraced by ythe loop of the cable or Wire for frictionally clamping the tensioned leg of the loop, and a second Wedge adapted to be forced into the socket into gripping engagement With the other leg of the loop.

5. A cable or Wire clamp comprising a housing having a tapered socket for receiving a loop of cable or Wire, a Wedge in the socket for frictionally clamping a leg of the loop against one side of the socket, and a second Wedge adapted to be forced into the socket to maintain the first mentioned Wedge in gripping engagement With the cable or Wire.

6. A cable or Wire clamp comprising a housing having a socket for receiving a portion of a cable or wire, a Wedge in the socket for frictionally clamping the cable or Wire against one side of the socket, and a second wedge adapted to be forced into the socket in the same direction as the first mentioned wedge to maintain it in gripping enga-gement with the cable or wire.

7. A cable or Wire clamp comprising a housing having a tapered socket for. receiving a portion of a cable or Wire, and a plurality of Wedges in the socket and cooperating therewith for frictionally clamping the cable or Wire.

In testimony whereof I have hereunto set my hand.

JEHU FREDERIC Havvormn.l 

